111101212049 has 2 divisors, whose sum is σ = 111101212050. Its totient is φ = 111101212048.

The previous prime is 111101211997. The next prime is 111101212111. The reversal of 111101212049 is 940212101111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106662987649 + 4438224400 = 326593^2 + 66620^2 .

It is a cyclic number.

It is not a de Polignac number, because 111101212049 - 2²⁴ = 111084434833 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (111101212249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55550606024 + 55550606025.

It is an arithmetic number, because the mean of its divisors is an integer number (55550606025).

Almost surely, 2^111101212049 is an apocalyptic number.

It is an amenable number.

111101212049 is a deficient number, since it is larger than the sum of its proper divisors (1).

111101212049 is an equidigital number, since it uses as much as digits as its factorization.

111101212049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 111101212049 in words is "one hundred eleven billion, one hundred one million, two hundred twelve thousand, forty-nine".